Skip to main content

ASP.NET - Refresh Part of a Page

We often come across a scenario where we need to update part of a page. We can use IFrame to refresh part of a page. 
We can achieve this using Ajax also but here I am discussing how we can achieve without using Ajax.

Step 1. Add a page in the project with name “MyPage.aspx”, copy and paste below code in the aspx page
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="MyPage.aspx.cs" Inherits="MyPage"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><htmlxmlns="http://www.w3.org/1999/xhtml"><head runat="server">    <title>Refresh part of page</title>    <metahttp-equiv="Refresh" content="5" />  </head><body>    <form id="form1" runat="server">    <div>       <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>    </div>    </form></body></html>
The below line of code in the head section of the above code will refresh the page after every 5 second.
<meta http-equiv="Refresh" content="5" />
Step 2: Put below bold and italic lines of code in the Page_Load method of MyPage.aspx page, this line will refresh the time on each refresh of the page.
protected void Page_Load(object sender, EventArgs e)    {        Label1.Text = "This Page has been refrested at " + DateTime.Now.ToString();    }
Step 3. Now add another page in the project with name “Refresh.aspx”, copy and paste below code in aspx page of Refresh.aspx.
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Refresh.aspx.cs" Inherits="Refresh"%><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><htmlxmlns="http://www.w3.org/1999/xhtml"><head runat="server">    <title>Untitled Page</title></head><body>
    <form id="form1" runat="server">    <asp:Label ID="Label1" runat="server" Text="" />    <div>           <iframe id = "myFrame" src = "MyPage.aspx" frameborder = "0" style="width: 500px;height:100px">            </iframe>     </div>    </form></body></html>
I have added an IFrame to achieve the goal of part refresh of the page. I have added src property and set it to MyPage.aspx which I have created in step 1.
I have also put a label outside the iframe to show the Date and time when Refresh.aspx page will load.

Step 4: Copy and paste below bold line of code on Page_Load methodprotected void Page_Load(object sender,EventArgs e)
    {        Label1.Text = DateTime.Now.ToString();    }
Now run Refresh.aspx page, you will notice that the time on the Refresh.aspx won’t change but the time on MyPage.aspx will change after every 5 seconds
Live Demo Like us if you find this post useful. Thanks!

Shibashish mohanty
Download Code 

Comments

Post a Comment

Popular posts from this blog

Editing Child GridView in Nested GridView

Editing Child GridView in Nested GridView In this article we will explore how to edit child gridview in the nested gridview.   Let''s write some code. Step 1:  Add scriptmanager in the aspx page. < asp : ScriptManager   ID ="ScriptManager1"   runat ="server"   EnablePageMethods ="true"> </ asp : ScriptManager > Step 2:  Add below stylesheet for modal popup. < style   type ="text/css">        .modalBackground        {              background-color : Gray;              filter : alpha(opacity=80);              opacity : 0.5;       }        .ModalWindow        {              border : solid1px#c0c0c0;              background : #f0f0f0;              padding : 0px10px10px10px;              position : absolute;              top : -1000px;       } </ style > Step 3:   Create an aspx page and add a Gridview with another gridview in the last TemplateField. The last templatefield will also contain a lable which will
Post a Comment
Read more

Scrollable Gridview With fixheader using JQuery in Asp.net

Scrollable Gridview With fixheader using JQuery in Asp.net Introduction: In this article I will explain how to implement scrollable gridview with fixed header in asp.net using JQuery.  Description:  In Previous posts I explained lot of articles regarding Gridview. Now I will explain how to implement scrollable gridview with fixed header in asp.net. I have one gridview that contains lot of records and I used  paging for gridview  but the requirement is to display all the records without paging. I removed paging at that time gridview occupied lot of space because it contains more records to solve this problem we implemented scrollbar.  After scrollbar implementation if we scroll the gridview we are unable to see Gridview header.   To implement Scrollable gridview with fixed header I tried to implement concept with css and JavaScript but there is no luck because maintaining fixed header working in IE but not in Mozilla and vice versa to solve this browser compatibility proble
Post a Comment
Read more

GRIDVIEW GROUPING

When displaying data, we sometimes would like to group data for better user experience or when displaying long list of hierarchal data, we would want to display them in a tree view kind of structure. There is more than way of doing this, but I am going to explain achieving this functionality using  AJAX Collapsible Panel Extender Control . Overview: I am going to use  Adventure Works  as datasource. Every product in  Production.Product  table belongs to a product sub category. We fetch handful of products and the sub categories they belong to from the database. Our objective is to list all the available sub categories and allow user to  expand/collapse  to look/hide the list of products belonging to each subcategory. Database Connection Added following entry under  connectionStrings  element in  web.config . < add   name = "Sql"   connectionString="Data Source=(local); Initial  Catalog = AdventureWorks ;  User = testuser ;  Password = testuser ;"
Post a Comment
Read more